Crosslinked guar based blocking gel system for use at low to hig

Details Crosslinked guar based blocking gel system for use at low to hig Crosslinked guar based blocking gel system for use at low to hig

1995-04-19

1996-08-20

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166294, 166300, 507211, 507903, 507921, 507925, E21B 33138, E21B 4325

Patent

active

055470262

ABSTRACT:
High temperature blocking gel is shown for temporary workover operations. The blocking gel is prepared by blending a guar or derivatized guar polymer with an aqueous fluid. The mixing method employed mixes and pumps the guar polymer essentially unhydrated. The resulting lower viscosity minimizes friction pressure during placement.

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